Network Plane 편집하기

'''Network Plane''' refers to the functional layers of a network architecture, each responsible for specific tasks in the operation and management of a network. These planes are essential to understanding and designing modern networks, particularly in the context of Software-Defined Networking (SDN) and traditional networking models.
==Overview==
A network plane is a conceptual division that separates the functions of networking into distinct areas, enabling modularity and manageability. The three primary planes in a network are:
*'''Control Plane''': Responsible for decision-making and routing.
*'''Data Plane''': Handles packet forwarding and actual data transmission.
*'''Management Plane''': Oversees network monitoring, configuration, and management tasks.
In some contexts, the network planes are simplified into just two categories:
*'''Control and Management Plane''': Combines decision-making, monitoring, and configuration.
*'''Data Plane''': Focuses solely on packet forwarding and traffic handling.
==Types of Network Planes==
===Data Plane===
*Also known as the '''Forwarding Plane'''.
*Responsible for the actual movement of packets through the network.
*Functions include:
**Packet forwarding.
**Applying Access Control Lists (ACLs).
**Quality of Service (QoS) enforcement.
*Operates at high speeds and is implemented in hardware or firmware for efficiency.
===Control Plane===
*Responsible for network decision-making, such as routing and traffic engineering.
*Functions include:
**Building and maintaining routing tables.
**Establishing paths for packet forwarding.
*Communicates with data plane to install forwarding rules.
*Implemented in software or hardware and often centralized in Software-Defined Networking (SDN) environments.
===Management Plane===
*Focuses on network configuration, monitoring, and administration.
*Functions include:
**Collecting network statistics.
**Managing devices and troubleshooting.
**Implementing policies and updates.
*Interfaces with the control plane to enforce administrative rules.
==Two-Plane Model==
In simplified architectures, particularly in resource-constrained or specific SDN deployments, the three-plane model may be reduced to two planes:
*'''Control and Management Plane:'''
**Combines the control and management functions into a single layer.
**Decision-making, routing, monitoring, and configuration tasks are integrated.
**Simplifies the design but may increase the complexity within this combined plane.
*'''Data Plane:'''
**Retains its core role of packet forwarding and traffic handling.
**Focuses on efficiency and performance without additional decision-making tasks.
This two-plane model is often used in systems where strict separation of management and control is not necessary, such as small-scale networks or certain IoT deployments.
==Relationship Between Planes==
In traditional networking, all planes are typically integrated within each network device. In Software-Defined Networking (SDN), the control plane is separated and centralized in an SDN controller, while the data plane remains on the devices. When using the two-plane model, the SDN controller may also integrate management functions into the control layer.
==Applications==
*'''Software-Defined Networking (SDN):''' Separates the control and data planes to enable dynamic and programmable networks.
*'''Traffic Engineering:''' Uses the control plane to optimize network paths based on policies.
*'''Network Monitoring and Troubleshooting:''' Relies on the management plane for operational insights.
==Advantages==
*Clear separation of tasks simplifies network design and troubleshooting.
*Enables scalability and flexibility in network operations.
*Facilitates the implementation of advanced features like network virtualization and dynamic traffic management.
==Limitations==
*Separating planes, especially in SDN, introduces latency between the control and data planes.
*Centralized control planes can create a single point of failure.
*Combining the control and management planes in the two-plane model can increase internal complexity.
==See Also==
*[[Control Plane]]
*[[Data Plane]]
*[[Management Plane]]
*[[Software-Defined Networking (SDN)]]
*[[Traffic Engineering]]

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[[Category:Network]]
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